It's an svo. Only svo's came with that style louver on the rear quarter window. Rear wheel is the type that came on svo's. Not too sure about the front wheel, my friends 85.5 svo has the the front wheel on all 4 sides of his.
The hood appears to be an svo hood, you can sort of see the bump which is in the spot where the svo hood scoop would be.
What I don't see is the rear spoiler (which could have been taken off, they tend to rattle alot of times)
Also that is not an svo side skirt, that looks to me like a cobra side skirt.
If I had to guess I'd say it's an svo. Other than the side skirt it looks 100% like one. & the rear quarter window pieces aren't too easy of a task to replace, nor are they an easy task to find. Last I saw they were pretty expensive too.
Not sure on value though, I don't buy cars that cost more than $2500. I prefer to buy/upgrade/body work myself. All but my GT I got for under $500 & fixed up myself